Analysis

  • max time kernel
    71s
  • max time network
    64s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250113-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    23-01-2025 00:33

General

  • Target

    https://stemmcommunnity.com/105842916025

Malware Config

Signatures

  • Detected potential entity reuse from brand STEAM.
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://stemmcommunnity.com/105842916025
    1⤵
    • Drops file in Windows directory
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x21c,0x220,0x224,0x1f8,0x228,0x7ffefee6cc40,0x7ffefee6cc4c,0x7ffefee6cc58
      2⤵
        PID:4716
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1772,i,1844444275788568297,13452276119411591790,262144 --variations-seed-version=20250112-180253.846000 --mojo-platform-channel-handle=1720 /prefetch:2
        2⤵
          PID:4276
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=2096,i,1844444275788568297,13452276119411591790,262144 --variations-seed-version=20250112-180253.846000 --mojo-platform-channel-handle=2188 /prefetch:3
          2⤵
            PID:4592
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=2224,i,1844444275788568297,13452276119411591790,262144 --variations-seed-version=20250112-180253.846000 --mojo-platform-channel-handle=2244 /prefetch:8
            2⤵
              PID:4964
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3124,i,1844444275788568297,13452276119411591790,262144 --variations-seed-version=20250112-180253.846000 --mojo-platform-channel-handle=3172 /prefetch:1
              2⤵
                PID:3788
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3140,i,1844444275788568297,13452276119411591790,262144 --variations-seed-version=20250112-180253.846000 --mojo-platform-channel-handle=3212 /prefetch:1
                2⤵
                  PID:3616
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=3672,i,1844444275788568297,13452276119411591790,262144 --variations-seed-version=20250112-180253.846000 --mojo-platform-channel-handle=4504 /prefetch:1
                  2⤵
                    PID:4588
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4960,i,1844444275788568297,13452276119411591790,262144 --variations-seed-version=20250112-180253.846000 --mojo-platform-channel-handle=4968 /prefetch:8
                    2⤵
                      PID:2028
                  • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                    "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                    1⤵
                      PID:4868
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                      1⤵
                        PID:1268

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState

                        Filesize

                        649B

                        MD5

                        a70ea8abcf62ca20c1f4608d61f215a8

                        SHA1

                        3d214adaf51413cd3e504829697bd3cd35f71218

                        SHA256

                        2e4fa61baa2b99d20a5cbf89b31662c8605e6bf93cc12f756133e8d8a0dae89d

                        SHA512

                        d68ac2846ddd39002251f230a6f9adee32a93ce7d1c14f1fdba1553f356e7f7e8d90a8bc785d9d1706f674dccb90395196b82d2ade0e6d151ba2ee55db410c85

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index

                        Filesize

                        480B

                        MD5

                        39e5f8323cc6c4d0447e6fb8f82c96b5

                        SHA1

                        ef41fd4e925c83bc412c47c001993674f4236c88

                        SHA256

                        327566fd529bb761904cb09e45fe2775d32ef8d5bddf25cbfd9050f268515cf9

                        SHA512

                        d6da947748e8ea85c1958276acd457988abc2ee423694ccafad023108d150892c82957292a952dd7a02b4f8ca4ee1f7c3f477d4176b39a0e506f4d7a159ed1a9

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index

                        Filesize

                        576B

                        MD5

                        17f6e8072fae1e728d7d35c030a20d7c

                        SHA1

                        69ffa2fb04873b7abf8c30c03b3324a8d07b4cbe

                        SHA256

                        2bbd23d24cf5e8cfee6ac8898f0cbe37fd3ed263f888f18377d0b85aefe4fb3d

                        SHA512

                        cbeeb9550bce67baf98cb912486d71c4b054a6ff11361ad842f751590c2ac53f90ff9b314efc58693ce67bceb43e875596e5ec51250417252ae5576803b5305d

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                        Filesize

                        3KB

                        MD5

                        040c2a1bb5303f9de40cc46a41c56ed7

                        SHA1

                        9d4c4820afc29cc9e2b646e33fd87d5d21457e86

                        SHA256

                        f46d4a8dea3e6a57262bdd7dd7920777ea4071e6a05260297d482963698109ce

                        SHA512

                        016ebfc2c2a64e74acef51b6867967ef9f66965d2804fa6f02a4254a70388f9d987d6a2f5670af76e02f2866282343330751f654930f8c9c7fae1e528b8c3974

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                        Filesize

                        2B

                        MD5

                        d751713988987e9331980363e24189ce

                        SHA1

                        97d170e1550eee4afc0af065b78cda302a97674c

                        SHA256

                        4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                        SHA512

                        b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                        Filesize

                        1KB

                        MD5

                        9552deebd7e3c873abb5c705727b6269

                        SHA1

                        ee001ecd3423942a8c8ff46422ecc2901f962d30

                        SHA256

                        276fc44d207092f015506dd8f84be85367b6328faa809a2e9430d342d141fb3d

                        SHA512

                        cb53172262fe7b34fe7e8026769165c490e0f518239184f0c7fff7391bf42adae6c64293b546f6e02bf2c17b1083e306c4b8036172507336856c91a34d9ed7f8

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                        Filesize

                        1KB

                        MD5

                        003b8dd60e88f85e9916fb7d411fa348

                        SHA1

                        430f9dd4070782c96f86efdd571b864b82d8f046

                        SHA256

                        eda1aa004a1a61d26f960fb5d6f9812c169ac39655ffcfafff19f6d5fe178d9b

                        SHA512

                        da04ea923abb73de8684aaf1e53eeb969150aee67e221d584ddc94d5e1d7ef80d9b7d61af54ba3e59d14943f4ef53d0bd11deb477fed3bbbe92d86c2731394a8

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                        Filesize

                        1KB

                        MD5

                        0909cc759f7ac57c8c9e8ea654935110

                        SHA1

                        59c4968aab0035bac1e8292d4ba1ef31180dedad

                        SHA256

                        4a93643e4331aa9ca248bacc8edd4c610eb7f7185920ffbd703b4f7a2788a326

                        SHA512

                        7f604f7294a18a5f67a8bd55f7987ee476d3171d5e888438294d13cd537ca45f472b3e66671dd39adbdfa49f95a40ca04a396ebc432481b01ea3a425775c31a9

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        a3fbe6578a9ea071afb075e6f17c351b

                        SHA1

                        7ea0a2267c6af8967a59b0d7c69106af0405f0be

                        SHA256

                        0003c7fba5ac08c1f0dfcc5a5acfd19a83d54adda67368412307173f49210d72

                        SHA512

                        67bf46667916b405b4ffcf9483554cedc04cc6022919bd08c0e5602eed7875c00110614707e99392efa58794e652492a5305b6da591d7398efe73b94f73e06a5

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        02b04b0251c5109896604b47eff0d147

                        SHA1

                        9f39d1fe61dbccea9a711485c90ec9da1eb2cd67

                        SHA256

                        bbb8d2a35522ae60ff9f35a3c20bcbf91243773888ad249bbeea9e5eb805d8d6

                        SHA512

                        4ae6a5c59d6b6cae0b3ed82470e3499f8d53067fa82668fe8028dba3f13464b3882fb1585c9252fa7603ae5497744b109a468d541a667759cf55fff331b284fd

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        c7679909d9e423549b5a0af72106b381

                        SHA1

                        0c874a368dbca15d76e4cf16a83e7c1d22c1de0a

                        SHA256

                        c4585be6e23d1c655f7a766cb63a607b65882e9901a2e68062ec9a4ab8f80f2d

                        SHA512

                        0feca1863ab899206e43d3c048c66ef4057ad3e14a4e8039cfd80536267e7984cc70591adaafb3d79e1019edd83f730997a9650e1e6cfeb76e7c4babfb8e4790

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        c1fd5538760359604b6e63a24778511b

                        SHA1

                        6b430a242f29bb5642c248a0acf9e098f890f24d

                        SHA256

                        6bc066791d473c2d2e99a53c0258955cf621dd2e96e6782efae158059f5c1edd

                        SHA512

                        120a38e6f0ae08c37bd2540e7090f0c2b66b8f8a538a19aead2e0d2758822928cc79fcb365dfd744bb0e443c87b317b00f91d153dc3016f68eda839776ea1ac4

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        3b6c191593a3e02e5cf33ba1366f0227

                        SHA1

                        4fa12dbc45244b5478084dbea6032be01922eb94

                        SHA256

                        9cfa27ef88542963f671fca1ba7d44a2a684f248ea7d70abdd6cc8b5076e90bb

                        SHA512

                        6ae3f17abb031e3b9e071e1b947855881b8e59ea4b90b2077da7a3b01d18d6846249d88c2247e2de5ac361d88337f6d0d340f5d982f28016da277c3e8d5274b2

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                        Filesize

                        118KB

                        MD5

                        cd347cfa52c0a4dcae4f3b6506bc879e

                        SHA1

                        93535e9c4e82d6ceb3bdc4247e2530be28946884

                        SHA256

                        3e68ef0508fde62481d71c7b926de30f2fb608a8e904934944398b2bff2f0de9

                        SHA512

                        236e9c6bc040238b81c1592cbcbc4453e34b38c21a958c925390aa4b03e12969fc698c845c1beba26a3fed9cb36f89b2706fee9fb28ec996c918931e9689d192

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                        Filesize

                        118KB

                        MD5

                        dd0fefc2be85b3e5e742cf2e9e5dc727

                        SHA1

                        fb936b60e78b4cc3db023629b5f7a98d27668135

                        SHA256

                        32c2a70dfe00a79ce02a32c4ae52714bcb6a0124885ef2f6163241ad58d5eb14

                        SHA512

                        0aa070890dbe97ab81ec92c64edc42721a2105d0c9fcc63c0d5cd360741c279768932cdc636e6eed40fe1ed8ed51f39944eeafc03e3a25e9822ee2959d093ef2